Represents restricted stock units granted to the reporting person on May 2, 2012. The restricted stock units will vest and shares will be issued equally on the first and second anniversaries of the date of grant.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.